Posts

May 2020

Reducing jitter on Linux with task isolation May 3, 2020

January 2020

Comparing perf.data files with perf-diff Jan 17, 2020

December 2019

Linux kernel preemption and the latency-throughput tradeoff Dec 23, 2019

November 2019

Does SMT still make sense? Nov 5, 2019

October 2019

isolcpus is deprecated, kinda Oct 8, 2019

July 2019

Adding timestamps to bash scripts with ts Jul 28, 2019
What are ACPI SLIT tables and why are they filled with lies? Jul 12, 2019

May 2019

Coding is a Craft May 22, 2019

November 2018

The psychology behind why humans suck at reading performance data Nov 26, 2018

July 2017

The Linux x86 ORC Stack Unwinder Jul 31, 2017

May 2017

LMBench versus GCC Optimisations May 31, 2017
Dear Btrfs, Where the fsck is my free space? May 11, 2017
New Linux scheduler runqueue clock asserts in v4.11 May 3, 2017

April 2017

The Trouble With Sensible Project Names Apr 21, 2017

March 2017

When Was The Last Time You Were In "The Zone"? Mar 11, 2017
intel_idle.max_cstate=0 Considered Harmful Mar 6, 2017

February 2017

Using perf-probe To Analyse VM Exits Feb 26, 2017

January 2017

A Kernel Dev's Approach to Improving Mutt's Performance - Part 2 Jan 15, 2017
Optimising The Common Case In The Real World Jan 12, 2017

December 2016

A Kernel Dev's Approach to Improving Mutt's Performance - Part 1 Dec 19, 2016
Why you should tell Qemu about your L3 cache Dec 8, 2016

November 2016

Measuring Linux system call latency regressions Nov 5, 2016

October 2016

What is a microbenchmark? Oct 8, 2016

June 2016

Using perf-stat as a simple benchmark wrapper Jun 6, 2016

December 2015

x86 descriptor table registers and lazy evaluation Dec 23, 2015
Installing debug symbols on openSUSE Tumbleweed Dec 9, 2015

April 2015

Early x86 Linux boot debug tricks Apr 15, 2015

March 2015

Development Tools versus Processes Mar 9, 2015

January 2015

git pathspec magic Jan 18, 2015